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Gate Drive Measurement Considerations

Published by Rohde & Schwarz Inc.

One of the primary purposes of a gate driver is to enable power switches to turn on and off faster, improving rise and fall times. Faster switching enables higher efficiency and higher power density, reducing losses in the power stage associated with high slew rates. However, as slew rates increase, so do measurement and characterisation uncertainty.

The trend for silicon based power designs over wide bandgap power designs makes measurement and characterisation a greater challenge. High slew rates in SiC and GaN devices present designers with hazards such as large overshoots and ringing, and potentially large unwanted voltage transients that can cause spurious switching of the MOSFETs.

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Related Categories Components, Embedded, Communication, Resistors, SMD passives, Capacitors, Inductors, Connectors, Switches, Wireless networking ICs and modules, Near-Field Communication (NFC), Sub-GHz/ISM-band radio, Cellular, LPWAN technologies, Transformers, PCB-substrate technology, Microcontrollers, Development and debug tools, Evaluation boards, SBCs and modules, Embedded operating systems and software, Edge computing

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